veoexrmpzt
Dołączył: 21 Lut 2011
Posty: 371
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Skąd: England
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 Wysłany: Pon 10:28, 28 Mar 2011 Temat postu: tory burch reva jmd zpw hhad xhr |
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All-ceramic crowns for the cosmetic restoration of anterior teeth after the effects of observation and comparison periodontal
August 2007 ~ May 2008 in our hospital emergency room or ward cardiac arrest occurred (20min from within) of 28 patients, all in compliance with CA diagnostic criteria, and after ECG or ECG monitoring confirmed. 15 male and female l3 cases; age of 39 to 67 years, mean age (47.1 ± 0.23) years; mean CA time (11.5 ± 0.82) min; 9 cases of cerebral vascular accident,[link widoczny dla zalogowanych], coronary heart disease 5 cases of rheumatic heart disease in 4 cases, 3 cases of pulmonary heart disease, acute myocarditis in 3 cases, 2 cases of pesticide poisoning, chronic renal failure in 2 cases. 1.2 The treatment of all patients after cardiac arrest is found, immediate external cardiac massage, tracheal intubation and mechanical ventilation. All patients were given ECG, Once ventricular fibrillation, electrical defibrillation was immediately given treatment of recurrent ventricular fibrillation in amiodarone-fat, and intravenous injection of epinephrine lmg; if spontaneous cardiac rhythm is not restored, 5min after the repeated application of adrenal Su lmg, until restoration of spontaneous cardiac rhythm or stop treatment. Restoration of spontaneous circulation in patients with immediate dehydration, correct acid, a series of measures to maintain loop stability, while taking the head cool in order to facilitate brain recovery. When necessary,[link widoczny dla zalogowanych], can be used in patients with atropine, dexamethasone, lidocaine and amiodarone and other drugs. 1.3 The effect of restoration of spontaneous circulation standard criteria: all after treatment display appears on the laws of ECG rhythm, and can be touched artery pulse, blood pressure,[link widoczny dla zalogowanych], I> 90/60mmHg, the maintenance of the mechanical properties, its hardness, melting point, density, elongation, , the shrinkage rate and tensile strength are suitable for making porcelain crown base material in the field of oral rehabilitation has been widely used, but with the restoration techniques and the development of materials science, non-metal ceramic crowns have demonstrated the inadequacies of .... Nickel-chromium alloy for the base of the porcelain crown labeled nickel-based, ingredients in the oral environment more prone to the release of metal ions, the traditional Ni-Cr alloy porcelain crowns is the use of metal oxide to increase the metal and porcelain combination of alloy surface oxide and the reaction occurs in the mouth black or blue gray salt 【2J. Edge of the neck in saliva electrochemical corrosion of metal, corrosion products penetrate into the ceramic crown off the neck edge staining, so that the gingival margin appears gray or black line, that is the clinical term While nickel-chromium alloy nickel ions can form soluble in the electrolyte, there is potential toxicity, and deposited in the gingival margin, might cause some marginal gingivitis patients, seriously affecting the aesthetics 【3】. Observed in our hospital showed that 65% of the final Ni-Cr alloy-porcelain crown after periodontal changes, of which 22 cases had mild periodontal changes, 14 cases of severe periodontal changes, and all-ceramic crowns only 1 case of minor changes . Unlike all-ceramic crown is porcelain fused to metal crown restoration of a biomimetic, including cast glass, porcelain, alumina ceramic crown, zirconia ceramic crowns, which is made of ceramic material covering the entire surface of the crown restorations. Has good mechanical properties, density and hardness of enamel close to the transparency and refractive index similar to enamel. It has a natural color stability, low thermal conductivity, non-conductive, wear resistance, biocompatibility and good, and, for the purposes of PFM without the metal structure, not through the metal color, to avoid the adverse metal stimulation, is a former ideal tooth restoration. But because of its brittleness, high prices, to some extent limit its application, so I applied to the former hospital to repair teeth, after a year of observation, 40 patients showed only a case of all-ceramic crowns to change (due to cervical margin of a small amount of all-ceramic crowns have porcelain breakage caused by sharp edges stimulation), others are not the phenomenon of color edge restoration, marginal microleakage good, no inflammation, swelling and discoloration of gums and other allergic reactions, no gum Black Line, and in the satisfaction with the color, marginal adaptation,[link widoczny dla zalogowanych], marginal discoloration, gum color and gum inflammation, the treatment group than the control group (P <0.05), be satisfied with the clinical aesthetic effect,[link widoczny dla zalogowanych], is a cosmetic restoration of anterior teeth ideal method. [
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